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A cone, the bottom area is 12.56 square decimeters, the volume is 31.4 cubic decimeters, its height should be______ ．
12.56 × 3 △ 3.14 = 37.68 △ 3.14 = 12 (decimeter). A: its height is 12 decimeters
The height is 4 decimeters, the bottom area is what square decimeters of the cone, the volume is 36 cubic decimeters? (urgent ~)
36 times 3 divided by 4 = 27
25% of the volume of a cylinder is 5 cubic decimeters, and the bottom area is 4 square decimeters. What is the height of the cylinder?
5 cubic decimeter corresponds to 25% of the volume of the cylinder
According to the formula height = volume / bottom area, use 20 / 4 = 5 (decimeter) to calculate the height of the cylinder
A: the height of this cylinder is 5 decimeters
RELATED INFORMATIONS
- 1. The volume sum of a and B cubes is 56 cubic decimeters. The length of a side is one third of that of B side The volume of cube is () cubic decimeter and () cubic decimeter respectively.
- 2. Use a small cube with a volume of 1 cubic decimeter to pile up a large cube with a volume of 1 cubic meter. You need () if you put these small cubes next to each other Using a small cube with a volume of 1 cubic decimeter to pile up a large cube with a volume of 1 cubic meter, we need (). If these small cubes are arranged in a row next to each other, how long is it () meters?
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- 7. There is a hollow copper ball with a mass of 178g and a volume of 30cm3. If the hollow part is filled with water, what is the mass of the whole copper ball? (the known density of copper is 8.9 × 103kg / m3)
- 8. A hollow copper ball with a mass of 178g and a volume of 30cm3, (1) The ratio of the volume of the hollow part to the volume of the solid part of the copper ball was calculated. (2) Xiao Hua filled the hollow part of the copper ball with some liquid, and the total mass was 314g
- 9. If the hollow part of a 5-hollow copper ball with a volume of 30cm and a mass of 178g is filled with aluminum, what is the mass of aluminum?
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